Pre-exercise antioxidant enzyme activities determine the antioxidant enzyme erythrocyte response to exercise.

abstract：:The aim of this study was to integrate both dispositional and situational factors to examine their interactive ability to predict pre-competitive goal states of task and ego involvement in a sample of National junior tennis players. The Task and Ego Orientation in Sport Questionnaire (Chi and Duda, 1995) and a set of ...

journal_title：Journal of sports sciences

authors： Harwood CG,Swain AB

更新日期：1998-05-01 00:00:00

abstract：:The aim of this study was to establish the effectiveness of a resistance training programme, designed to improve vertical jumping ability, on the grab, swing and rear-weighted track starts in swimming. Twenty-three female non-competitive swimmers participated (age 19.9 +/- 2.4 years; mean +/- s). The diving techniques...

journal_title：Journal of sports sciences

authors： Breed RV,Young WB

更新日期：2003-03-01 00:00:00

abstract：:Stand-up paddle boarding (SUP) is a rapidly growing activity where only anecdotal evidence exists for its proposed health and fitness benefits. The purpose of this study was to profile elite and recreational SUP with respect to anthropometric, physiological and musculoskeletal measurements. A total of 30 SUP participa...

journal_title：Journal of sports sciences

authors： Schram B,Hing W,Climstein M

更新日期：2016-01-01 00:00:00

abstract：:This study investigated the stability of the measurement of respiratory variables during rest, walking and running using the K4b(2) portable metabolic analyser in ten active males (age 31 ± 11 years; VO₂ peak 42.1 ± 2.6 ml · min(-1) · kg(-1)). Following a 10 min rest, participants completed three discontinuous increme...

journal_title：Journal of sports sciences

authors： Howe CC,Matzko RO,Piaser F,Pitsiladis YP,Easton C

更新日期：2014-01-01 00:00:00

abstract：:Previous research on unstable footwear has suggested that it may induce mechanical noise during walking. The purpose of this study was to explore whether unstable footwear could be considered as a noise-based training gear to exercise body center of mass (CoM) motion during walking. Ground reaction forces were collect...

journal_title：Journal of sports sciences

authors： Dierick F,Bouché AF,Scohier M,Guille C,Buisseret F

更新日期：2018-12-01 00:00:00

abstract：:In this study, we examined the relationship between anthropometric, strength and power characteristics of rugby forwards, their body position when scrummaging, and their ability to apply force when scrummaging. Force applied to an instrumented scrum machine was measured for 56 players, both individually and as scrum p...

journal_title：Journal of sports sciences

authors： Quarrie KL,Wilson BD

更新日期：2000-04-01 00:00:00

abstract：:Longitudinal research provides valuable information about change and progress towards elite performance. Unfortunately, there is a lack of longitudinal research in handball. In this study, 94 youth handball players (oldest group: n = 41; age 15-17 and youngest group: n = 53; age 13-15) were followed over a three-year ...

journal_title：Journal of sports sciences

authors： Matthys SP,Vaeyens R,Fransen J,Deprez D,Pion J,Vandendriessche J,Vandorpe B,Lenoir M,Philippaerts R

更新日期：2013-01-01 00:00:00

abstract：:The aim of this study was to determine the match activity and physiological demands of women's tennis during a 3-day clay-court tennis tournament. The activity profile of eight players was determined by filming each competitive match with video cameras. Metabolic-perceptual measurements--blood samples and individual r...

journal_title：Journal of sports sciences

authors： Fernandez-Fernandez J,Sanz-Rivas D,Fernandez-Garcia B,Mendez-Villanueva A

更新日期：2008-12-01 00:00:00

abstract：:The inability of the between-bowlers methodology to control parameters external to technique could lead to erroneous significant and non-significant associations being reported between fast-bowling technique and ball release speed. Using Pearson's product - moment correlation, we first examined the effectiveness of a ...

journal_title：Journal of sports sciences

authors： Salter CW,Sinclair PJ,Portus MR

更新日期：2007-09-01 00:00:00

abstract：:The aims of this study were to determine the validity of fat mass of the trunk as a predictor for visceral fat area at the umbilicus level and to develop equations to predict visceral fat mass at the umbilicus level using fat mass of the trunk measured by dual-energy X-ray absorptiometry (DXA) and bioelectrical impeda...

journal_title：Journal of sports sciences

authors： Demura S,Sato S

更新日期：2007-05-01 00:00:00

abstract：:Process-oriented motor competence (MC) assessments evaluate how a movement is performed. Product-oriented assessments evaluate the outcome of a movement. Determining the concurrent validity of process and product assessments is important to address the predictive utility of motor competence for health. The current stu...

journal_title：Journal of sports sciences

authors： Logan SW,Barnett LM,Goodway JD,Stodden DF

更新日期：2017-04-01 00:00:00

abstract：:The manifestations of fatigue, as observed by reductions in the ability to produce a given force or power, are readily apparent soon after the initiation of intense activity. Moreover, following the activity, a sustained weakness may persist for days or even weeks. The mechanisms responsible for the impairment in perf...

journal_title：Journal of sports sciences

authors： Green HJ

更新日期：1997-06-01 00:00:00

abstract：:This study used a quasi-applied research model to identify and develop potentially talented female soccer players. Athletes aged 15-19 years with a background in team ball sports or athletics were targeted for recruitment using advertisements and promotions through various media. Interested athletes attended a 2-day p...

journal_title：Journal of sports sciences

authors： Hoare DG,Warr CR

更新日期：2000-09-01 00:00:00

abstract：:The aim of this study was to examine the influence of maturity status on primary school children's physical activity and physical self-perceptions. Altogether, 175 children (97 girls, 78 boys) aged 10.6 +/- 0.3 years completed the Children and Youth Physical Self-Perception Profile and wore an ActiGraph accelerometer ...

journal_title：Journal of sports sciences

authors： Fairclough SJ,Ridgers ND

更新日期：2010-01-01 00:00:00

abstract：:The number and type of landings performed after blocking during volleyball matches has been related to the potential risk of ACL injury. The aim of the present study was to determine whether gender affects the frequency of specific blocking landing techniques with potential risk of ACL injury from the perspective of f...

journal_title：Journal of sports sciences

authors： Zahradnik D,Jandacka D,Holcapek M,Farana R,Uchytil J,Hamill J

更新日期：2018-04-01 00:00:00

abstract：:We examined sexual dimorphism in the anthropometry of 68 Australasian and Pacific powerlifters (14 females, 54 males) who were competing in one of two national or international powerlifting competitions held in New Zealand. All powerlifters were assessed for 37 anthropometric dimensions by ISAK (International Society ...

journal_title：Journal of sports sciences

authors： Keogh JW,Hume PA,Pearson SN,Mellow P

更新日期：2008-03-01 00:00:00

abstract：:The aims of this study were to provide a profile of young water polo players and to compare technical and tactical aspects, movement patterns, and cardiac loads of youth water polo and Acquagoal codes. Ten young (age 12.3 years, s = 0.6) male water polo players underwent anthropometric (stature, body mass, body mass i...

journal_title：Journal of sports sciences

authors： Lupo C,Tessitore A,Cortis C,Ammendolia A,Figura F,Capranica L

更新日期：2009-06-01 00:00:00

abstract：:The 100 ms ruling for false start disqualification at athletic competitions governed by the International Association of Athletics Federations has been in force since the early 1990s. Throughout this period, there have been marked changes to the rules that govern the disqualification of athletes from sprint events inc...

journal_title：Journal of sports sciences

authors： Brosnan KC,Hayes K,Harrison AJ

更新日期：2017-05-01 00:00:00

abstract：:Agility is an essential part of many athletic activities. Currently, agility drill duration is the sole criterion used for evaluation of agility performance. The relationship between drill duration and factors such as acceleration, deceleration and change of direction, however, has not been fully explored. This paper ...

journal_title：Journal of sports sciences

authors： Arshi AR,Nabavi H,Mehdizadeh S,Davids K

更新日期：2015-01-01 00:00:00

abstract：:The kinematics of male wheelchair rugby players (n = 8) during the final match of the 2008 Demolition Derby were assessed using two cameras (10 Hz) and a tracking method based on image-processing techniques. The players' on-court trajectory, total and accumulated distances covered, distances covered during working and...

journal_title：Journal of sports sciences

authors： Sarro KJ,Misuta MS,Burkett B,Malone LA,Barros RM

更新日期：2010-01-01 00:00:00

abstract：INTRODUCTION:High-Intensity Interval Training (HIIT) and Constant-Intensity Endurance Training (CIET) improves peak oxygen uptake (V̇O2) similarly in adults; but in children this remains unclear, as does the influence of maturity. METHODS:Thirty-seven boys formed three groups: HIIT (football; n = 14; 14.3 ± 3.1 years)...

journal_title：Journal of sports sciences

authors： Runacres A,Mackintosh KA,McNarry MA

更新日期：2019-11-01 00:00:00

abstract：:One of the first principles of cricket batsmanship that is coached from a young age is to play with a straight bat. Limited studies to date have examined whether top international batsmen use this traditionally described technique. Accordingly, we performed a descriptive, observational study of the backlift technique ...

journal_title：Journal of sports sciences

authors： Noorbhai MH,Noakes TD

更新日期：2016-10-01 00:00:00

abstract：:Blood flow changes in response to exercise have been attributed, among other factors, to the effect of vasodilators factors on the microvasculature, suggesting a close relationship between small blood vessels and conducting arteries. The main purpose of this study was to determine the relationship between the changes ...

journal_title：Journal of sports sciences

authors： Alvares TS,Oliveira GV,Soares R,Murias JM

更新日期：2020-04-01 00:00:00

abstract：:A regression analysis of competitors' tournament results in relation to their world rankings was proposed to identify the effect of home advantage in international 'grand-slam' tennis and 'major' golf tournaments. The results provided little evidence of home advantage in either the grand-slam tennis or the golf tourna...

journal_title：Journal of sports sciences

authors： Nevill AM,Holder RL,Bardsley A,Calvert H,Jones S

更新日期：1997-08-01 00:00:00

abstract：:High ground reaction forces during the front foot contact phase of the bowling action are believed to be a major contributor to the high prevalence of lumbar stress fractures in fast bowlers. This study aimed to investigate the influence of front leg technique on peak ground reaction forces during the delivery stride....

journal_title：Journal of sports sciences

authors： Worthington P,King M,Ranson C

更新日期：2013-01-01 00:00:00

abstract：:The purpose of this study was to examine whether any differences exist in the cognitive and behavioural strategies of gymnasts competing at different elite levels. Thirty-eight male gymnasts competing at different competitive levels in an Australian gymnastic championship completed a standardized questionnaire prior t...

journal_title：Journal of sports sciences

authors： Spink KS

更新日期：1990-07-01 00:00:00

abstract：:Officiating bias is thought to contribute to home advantage. Recent research has shown that sports with subjective officiating tend to experience greater home advantage and that referees' decisions can be influenced by crowd noise, but little work has been done to examine whether individual referees vary in their home...

journal_title：Journal of sports sciences

authors： Boyko RH,Boyko AR,Boyko MG

更新日期：2007-09-01 00:00:00

abstract：:This study examines the association between prolonged sedentary time and breaks in sedentary time with cardiometabolic risk in 10-14-year-old children. This cross-sectional design study analysed accelerometry-determined sedentary behaviour and physical activity collected over 7 days from 111 (66 girls) UK schoolchildr...

journal_title：Journal of sports sciences

authors： Bailey DP,Charman SJ,Ploetz T,Savory LA,Kerr CJ

更新日期：2017-11-01 00:00:00

abstract：:To characterize rugby union lineout throwing technique, three experienced male rugby players performed throwing trials under varying conditions of distance and trajectory. Motion analysis permitted the recovery of joint centre coordinates at 120 Hz and the construction of a three-dimensional linked segment model for c...

journal_title：Journal of sports sciences

authors： Trewartha G,Casanova R,Wilson C

更新日期：2008-06-01 00:00:00

abstract：:Few studies have focused on the effect of posture during sprint start. The aim of this study was to measure the effect of the modification of horizontal distance between the blocks during sprint start on three dimensional (3D) joint angular velocity. Nine trained sprinters started using three different starting positi...

journal_title：Journal of sports sciences

authors： Slawinski J,Dumas R,Cheze L,Ontanon G,Miller C,Mazure-Bonnefoy A

更新日期：2013-01-01 00:00:00